Abstract: A cylinder valve for mounting on a high pressure gas cylinder for remotely controlling the flow of gas from the cylinder. The cylinder valve is resistant to hazardous gases and includes a fluid passage for conveying gas through the cylinder valve from an inlet for communicating with the high pressure gas cylinder to an outlet. A first valve is provided for opening and closing the fluid passage to control the flow of gas through the fluid passage. A pneumatically operated actuator is provided for operating the first valve in response to the application of an external control pressure to the actuator. A mechanism is provided to move the first valve and close the fluid passage in the event of loss of external control pressure to the actuator. A second valve is located downstream of the first valve in the vicinity of the outlet. The second valve is biased to close the fluid passage but is moved to open the passage in response to attachment of a connector to the outlet of the cylinder valve.

Abstract: A pressure regulator for a fuel gas of the present invention operates to reduce the pressure of the fuel gas kept in a gas container to the predetermined pressure and then supply it to a burner through the secondary passage thereof. Further, the pressure regulator includes a shutoff valve disposed in the primary passage thereof and an actuator of which operation chamber connects to the secondary passage. In the shutoff valve, there is provided a valve body displaceable between the valve open position and the valve shutoff position and sustained in the valve open position by the attractive force of a magnet against the valve closing force by a valve closing means in the normal condition. In case the pressure in the secondary passage is increased abnormally, the actuator is driven by the increased secondary pressure so as to move the magnet away from the valve body and hence to close the primary passage by the valve body.

Abstract: A diaphragm-clamping arrangement, in which a spring washer having a frusto-conical shape is employed between the outer periphery of the diaphragm and one of the plate members between which the diaphragm is secured. In the free state of the spring washer, the spring washer height is greater than the space between the diaphragm and one plate member so that, when the plate members are joined together, the spring washer is compressed to thereby exert a clamping force on the diaphragm. The diaphragm-clamping point can be provided by either the inner or outer periphery of the spring washer, depending upon whether the frusto-conical shape is concave or convex. By forming an annular recess in the plate member with which the spring is engageable, proper location of the spring washer is facilitated during assembly, and subsequently maintained during clamping.

Abstract: A pressure regulating device is proposed, which serves to regulate the fuel pressure in a fuel injection system for internal combustion engines. The pressure regulating device includes a pressure regulating valve which has a valve diaphragm fastened in a valve housing and defining a fuel chamber which communicates via an inflow opening with a fuel distributor line. Protruding into the fuel chamber is a valve seat body joined to the valve housing, on one end of which body a valve seat is formed and the other end of which is embodied as an outlet pipe that passes through the wall of the fuel distributor line. The fuel distributor line is formed of two shell halves inserted one inside the other, of which the first shell half has a tub-shaped end into which the pressure regulating valve is inserted and with which it is securely fastened.

Abstract: A combination device for flow-regulation in an oxygen supply system, providing in a unitary device providing both an economizer valve which automatically and safely vents oxygen when the patient's demand or usage is less than the amount being constantly produced by the heat-induced evaporation (NER) of liquid oxygen in a supply reservoir, but automatically and economically stops the venting when the usage demand utilizes at least as much as the NER, in combination with a lockable flow-regulating oxygen-supply valve which can be pre-set to permit only a certain maximum flow rate of the oxygen although permitting the flow to be moderated to less than that maximum flow rate, thus giving an oxygen-therapy patient some control of oxygen flow-rate although preventing overdose.

Abstract: An improved diaphragm-type antidrip valve including a valve body defining an annular valve chamber having a fluid inlet and an axial fluid outlet defined by a centrally located valve tube with a diaphragm element having its peripheral portion held in sealing engagement against the outer end of the valve chamber by an end cap and its front face disposed for sealing engagement with the open end of the valve tube, wherein the diaphragm is formed with a centrally located button projecting axially from its rear face and received and radially supported in a socket in a valve follower slidably mounted in the end cap and biased towards closed position by a compression spring and the end cap including an annular contoured ramp presenting a concave seat adjacent the effective outer periphery of the diaphragm for radially and axially supporting the diaphragm in its open position.

Abstract: A fuel pressure regulator has a multi-faceted extruded base that allows the outlet from the pressure regulator to be oriented in any of six different directions. A fuel body has a projecting snout and a fuel passage extending through the snout, and the inlet to the pressure regulator plugs directly onto the snout; the fuel passage thereby supplies fuel to the pressure regulator, and the pressure regulator thereby maintains the desired fuel pressure in the passage.

Abstract: A pressure regulator valve for use in fuel systems for internal combustion engines which includes a two-part housing lamination with a diaphragm between the bottom and top housings and a centering valve guide disc above the diaphragm. The diaphragm is responsive to fuel pressure and will open a valve to by-pass fuel to a fuel tank. The centering valve guide disc functions to locate a diaphragm backing disc above the valve seat. A preferred diaphragm is formed of thin metal such as stainless steel which is confined at its periphery by housing elements to avoid destructive deformation in maximum pressure testing. In another embodiment, the metal operating diaphragm is secured at its periphery and formed in a manner to react in response to pressure to counteract increased spring force of a diaphragm backing spring. A press-in spring cap or cup allows calibration of the unit during assembly with a strike-in to fix the calibration in a tamperproof structure.

Abstract: An air regulator system using air-piloted valves for controlling a plurality of different air flows in a powder spray system. A control regulator is used to set the flow rates of a plurality of flow regulators, each of which is associated with a particular air flow in the powder spray system.

Abstract: A pressure regulator base has a rim staked over the flange of a pressure regulator cover, and a compression ring concentrates the clamping effort of the cover on a circular area of the pressure regulator diaphragm sealing region.

Abstract: A pressure regulator having a housing with a chamber disposed therein. A diaphragm is sealingly connected around the inner periphery of the housing for dividing the chamber into two parts. A first port is fluidly connected to a first part of the chamber and is adapted to be attached to a fuel return line. A second port is fluidly connected to the first part of the chamber and is adapted to be fluidly attached to a fuel rail having fuel injectors attached thereto. A third port is fluidly connected to the second part of the chamber and is adapted to be fluidly connected to an intake manifold of an internal combustion engine. A resilient flat washer is attached around the outer periphery thereof to the housing, adjacent to the first part. An elongated valve member is disposed in the first part of the chamber and has one end thereof adapted to be selectively and sealingly received within the opening in the washer.

Abstract: A fluid pressure boost attachment (18) is attached to a pilot valve (16) which senses the fluid pressure in a main flow line F. Upon restriction or blockage of fluid flow through inlet line (32) to pilot valve (16) the correct static fluid pressure is sensed in auxiliary fluid chamber (126) of boost attachment (18). Boost attachment (18) is actuated upon a predetermined pressure differential being reached between chambers (100) and (126) thereby to move actuator (120) and place intermediate fluid chamber (24) of pilot valve (16) in fluid communication with outlet fluid chamber (28) thereof.

Abstract: For use in a turbocharger system wherein exhaust flow from the engine is caused to rotate an impeller and charge the intake of the engine with compressed air, a water injection system comprising a water reservoir, a first line connecting the reservoir to the intake from a point above the liquid in the reservoir, a second line extending from below the level of liquid in the reservoir to the intake of the impeller and a check valve in the second line. The check valve includes a valve body having an inlet and an outlet, a seat separating the inlet and the outlet, a valve member, and a spring external of the valve member and of the flow of water through the inlet, outlet and seat yielding urging the valve member into engagement with the seat. The check valve may also be utilized in a fuel system wherein a fuel pump directs fuel to electronically controlled fuel nozzles. The check valve is placed in the line between the fuel pump and the fuel nozzle.

Abstract: A fuel pressure regulator comprising a housing, a diaphragm dividing the housing into a first chamber and second chamber, a passage from the exterior of the housing to the first chamber, an inlet and an outlet associated with the second chamber of the housing, and a valve seat associated with the outlet. A cage is mounted on and movable with the diaphragm and a spring within the first chamber yieldingly urges the cage toward the valve seat. The cage supports a pair of plates which retain a valve ball. The first plate has an opening through which a portion of the ball projects and a second plate retains the first plate and the ball within the cage. The first plate is movable transversely to provide for proper centering of the ball in the valve seat. A light spring extends between the cage and the ball to urge the ball against the first plate.

Abstract: A pressure regulator valve for use in fuel systems for internal combustion engines which includes a two-part housing lamination with a diaphragm between the bottom and top housings and a valve back-up pad above the diaphragm. The diaphragm is responsive to fuel pressure and will open a valve to by-pass fuel to a fuel tank. A centering diaphragm functions to locate a back-up pad above the valve seat. In one embodiment, the regulator valve pad controlled by the diaphragm is dimensioned with a diameter significantly larger than the effective valve seat area to insure full valve seat opening even when the valve pad is cocked slightly relative to the valve seat area. A press-on spring cap or cup allows calibration of the unit during assembly with a strike-in to fix the calibration in a tamperproof structure.

Abstract: A divers two-stage gas reclaim back pressure regulator is described having mutually concentric side-by-side annular first and second chambers interconnected by a central tubular duct one end of which is cooperable with a first stage diaphragm to form a first stage valve. A third chamber for connection to a gas reclaim line is disposed between the first and second stages and communicates with the latter by way of a plurality of radially-increasing-in-size openings through an annular land of convex configuration on which a second diaphragm seats. A biasing compession spring for the second stage is located in the mentioned tubular duct. An auxiliary closure is provided by a valve element carried on the second diaphragm and capable of seating on the second stage end of the duct. The arrangement is compact, demands relatively low exhalation operation pressure and is tolerant of intruding foreign matter.

Abstract: An adjustable vacuum regulator valve for the control and adjustment of vacuum and pressure comprising a valve body having an inlet and outlet port, a removably secured threaded cap for the valve body cooperating with the valve body in defining a chamber within the valve body enclosing a flexible diaphragm, an adjustable needle-nose stem valve vertically movably longitudinally disposed within the valve body and having a vertical longitudinal passageway therethrough for communicating between the inlet port and the chamber, a means for communicating between the chamber and the outlet port and a means for securing the adjustable needle-nose stem valve in a fixed position.

Abstract: A pressure control valve which serves to control a determined medium pressure. The pressure control valve includes a medium chamber with an inlet opening and an outlet opening for the medium to be controlled, separated by a membrane from a spring chamber with a valve spring. On the membrane, a valve member is floatingly disposed via a ball-shaped support member, which acts together with a valve seat. The outlet opening is disposed upstream of the valve seat in such a manner, that during a medium pressure to be controlled the valve member lies upstream of the outlet opening and together with the latter controls the flow of the medium to the valve seat, while during a medium pressure below the valve member descends with throttling action to a greater or lesser degree into the outlet opening and blocks the valve seat at a predetermined lower medium pressure.

Abstract: A safety valve designed for relieving pressure in a mine support jack. A washer and check valve are positioned in a counterbore located on the front surface of a resilient gasket member. A leg extends from the rear surface of the resilient gasket and extends through a rear chamber to support the check valve in a position sealing the outlet port. The rear chamber is filled with pressurized gas to form a gas cushion. The end of the leg is positioned to seal an inflation orifice.

Abstract: An implantable valve for allowing the passage of cerebrospinal fluid (CSF) from a ventricle of the brain to a suitable drainage location in the body includes a movable diaphragm, one side of which is in pressure communication with the drainage location of the body and the other side of which is in pressure communication with the epidural spaces. A valve assembly, actuated by movement of the diaphragm in response to increased epidural pressure controls passage of CSF from the ventricles to the drainage area.

Abstract: A fast acting ink valve adapted to be used in conjunction with the nozzle of an ink jet printing system is disclosed. A flexible diaphragm modulates flow through a valve chamber. A spring biases the diaphragm to a sealed position to prevent flow. Ink pressure in the marking system unseals the diaphragm permitting flow. Unlike check valves, the invention has minimal pressure drop due to the location of the bias spring outside the ink flow path.

Abstract: A mixer for delivering a mixture of two gases G.sub.1 and G.sub.2 in proportions respectively and by volume of X/100 and (100-X)/100; X/100 not being allowed to be smaller than a particular value. Each gas circuit comprises a pipe provided with a cock for adjustment of the rate of flow and with a calibrated orifice selected in such manner that for an identical pressure P, the rates of flow of the gases through these orifices are in the ratio X/(100-X), with devices for limiting the pressure of the gas G.sub.2 to that of the gas G.sub.1, as well as for limiting the pressure in both circuits. The invention is applicable to an oxygen-nitrous oxide mixer for anaesthetic purposes, in which the proportion of oxygen in the mixture supplied cannot drop below 25% and the flow rate of nitrous oxide cannot exceed a predetermined maximum.

Abstract: A spray valve assembly adapted to be removably, threadably secured to spray boom manifolds or the like for subsequent spraying of insecticides or other agri-chemicals. Preferably the spray valve assembly includes a rigid valve body adapted to be threadably secured to a suitable spray boom or manifold; and a cooperating valve head which is threadably secured to the valve body. A generally tubular fluid admittance passageway coaxially, sealably defined within the valve body extends partially into the valve assembly, and terminates in the assembly spray output. A plunger associated with the valve head includes a ram portion which contacts an internal gasket to selectively block the admittance input to prevent escape of agrichemicals. The plunger means also includes an elongated stem coaxially received through the valve head which is fitted with a transverse pin which normally tracks within a suitable follower slot defined in the head.

Abstract: A pressure regulator valve for use in fuel systems for internal combustion engines utilizing super-chargers for air supply which includes a three-part housing lamination with separate upper and lower diaphragms between the bottom and top housings and the intermediate housing. The lower diaphragm is responsive to fuel pressure and will open a valve to by-pass fuel to a fuel tank. The upper diaphragm is exposed to the pressure of super-charged air to resist the opening of the fuel by-pass valve. The effective areas of the upper and lower diaphragms is designed to have a ratio of about 4 to 1. An adjustable air by-pass valve is provided to adjust the air pressure acting on the upper diaphragm to permit ratio adjustment of the air pressure reaching the regulator to the fuel pressure reaching the engine, for example, a fuel injector leading to the engine.

Abstract: The drawings and description disclose a liquid filler arrangement including upper and main bodies and a lower sleeve nozzle, with a diaphragm assembly mounted between the main and upper bodies and an inlet formed in the side of the main body. Combined valve and orifice mechanism is operatively positioned substantially at the juncture of the main body and the sleeve nozzle, and one of a diffuser, a lip seal, or a valve is located at the bottom end of the sleeve nozzle, each of which supports a column of liquid product, the diffuser and lip seal by capillary action, and the valve by virtue of being closed. Upon a measured volume of liquid product being pumped into the side inlet by a remote timed piston device, an equivalent measured volume is discharged from the sleeve nozzle through its diffuser or opened lip seal or valve into a container which may be mounted around the sleeve nozzle and filled as it is being pulled from around the sleeve nozzle by a suitable external arrangement.

Abstract: A precision valve assembly for controlling the flow of fluids delivered to a patient has a valve element mounted on a flexible diaphragm. A controlled actuator displaces a portion of the diaphragm surface, flexing it, and by a leverage action, moves the valve closer to or away from the valve seat.

Abstract: A method and apparatus for producing vortex rings of a gas in a liquid. The apparatus includes: an accumulator including a gas outlet for discharging the gas and a gas inlet for introducing a gas from a gas supply source thereinto; a nozzle attached to the outlet of the accumulator in a communicating relation to the accumulator, the nozzle being of elasticity such that the nozzle is sealingly closed under liquid pressure when used; valve, connected to the accumulator, for permitting a gas supply from the gas supply source to the nozzle; and a mechanism for actuating the valve when gas pressure within the accumulator reaches predetermined pressure levels. In the method an accumulator is positioned in the liquid, and then the gas under pressure higher than that in the liquid surrounding the accumulator is supplied to the accumulator, from which the supplied gas is introduced into a nozzle communicated to the accumulator to open the nozzle against the pressure in the surrounding liquid.

Abstract: A slide valve especially designed for mining prop cylinders. The slide valve is durable and can be easily checked and adjusted. An inlet pressure line is separated from an outlet line by a diaphragm pressed against its seat by a spring. A thrust washer allows the diaphragm to remain flat, even when it is subjected to the pressure of the spring.

Abstract: A fuel supply member surrounds the perimeter of a pressure regulator diaphragm and sealingly engages the pressure regulator base and the pressure regulator cover to completely enclose the perimeter of the diaphragm in the fuel supply system.

Abstract: An apparatus for metering fluids at high pressures of about 20,000 to 60,000 psi is disclosed. The apparatus includes first and second plates which are positioned adjacent each other to form a valve chamber. The plates are made of materials which have substantially equal elastic properties. One plate has a planar surface area, and the other a recessed surface area defined by periphery and central lips. When the two plates are positioned in adjacent contacting relationship, a valve chamber is formed between the planar surface area and the recessed surface area. Fluid is introduced into the chamber and exits therefrom when a deformation occurs at positions where they no longer form a valve seat. This permits the metering of fluids at high pressures and at slow variable rates. Fluid then exits from the chamber until an applied external force becomes large enough to bring the valve seats back into contact.

Abstract: An emergency air intake valve has a circular plate having a top and bottom and depending central portion adapted to be connected to a conduit. The plate and the depending portion have a vertical bore therethrough. A diaphragm overlies the top of the plate and has a central opening aligned with the bore. The diaphragm has an enlarged depending peripheral portion adjacent the diaphragm opening and adapted to contact the top of the plate adjacent said bore. A cap secures the outer edge of the diaphragm adjacent the outer edge of the plate and forms with the diaphragm a chamber above the diaphragm. The plate has at least one opening therethrough to provide communication between the bottom of the diaphragm and the atmosphere.

Abstract: A fluid operated pressure oscillation generator having an additional inlet passage to permit removal of a cover.

Abstract: A throttle body fuel injection system has a pressure regulator which reduces the pressure of the fuel supplied to its electromagnetic injector as the engine induction passage pressure decreases.

Abstract: The fuel supplied to an injector is maintained at substantially constant pressure by a fuel pressure regulator which balances the fuel pressure with the bias of a coil spring. To establish the desired pressure, a spring housing is deformed to move a spring seat to the position which causes the spring to exert the required bias. The spring seat is connected to the diaphragm by a tie rod which simplifies assembly of the pressure regulator. Slits in the outer portion of the diaphragm allow separation of the diaphragm along an arcuate line while maintaining a continuous peripheral seal about the pressure regulator.

Abstract: A pressure control valve to control the pressure of a fluid in a fluid system so that it remains constant. This type of valve can be utilized as element of a fuel injection system for internal combustion engines, and has storage means which are independent of the valve member, and actuatable by the pressure of the fluid. The pressure control valve comprises a housing and a support assembly urged toward a valve seat by a control spring. Additionally, a storage spring in the support assembly urges a closing member toward the valve seat. The closing member is slidably received in a bore in the support assembly. The support assembly is connected to a membrane which is tensioned between the housing members. Other variations of this device are also revealed herein.

Abstract: A fluid flow controller comprises a casing and includes a valve that is actuatable by either a diaphragm or a piston. Diaphragm actuation is provided by a diaphragm held by a retainer, the retainer being axially moveable within the casing in response to fluid pressure on the diaphragm. Piston actuation is provided by (i) the retainer and (ii) sealing means at the periphery of the retainer for providing fluid tight engagement between the casing and the retainer. With either diaphragm or piston actuation, even if the diaphragm ruptures, substantially no fluid can bypass the retainer, and the flow controller continues to function. A relief valve prevents rupture of the diaphragm if the fluid pressure exceeds a predetermined valve.

Abstract: A diver's demand valve has a diaphragm 15 with a centrally located rigid element 16 which pivots with a lever effect on an eccentric port 22 upon establishing an operative pressure difference across the diaphragm to open and close the valve. An abutment surface 30 prevents unwanted pivoting and a spring 27 keeps the rigid element 16 seated except during operative pressure differences.For a diver's exhalation demand valve an "anti-squeeze", safety, flap valve 34 may be provided in the rigid element 16.

Abstract: Apparatus for impulse spraying. A float valve is disposed at the lowest end of a liquid/gas accumulator which is connected via a connecting pipe having the float valve interposed therein to a hollow member having a vertically divided space to the upper end of which an outflow pipe leading to a sprinkler is connected. A water distribution pipe leading from a water supplying conduit is attached to the lower end of the divided space. A selectively operated shut-off valve in the hollow member is interposed between the outflow pipe and the connecting pipe, the shut-off valve functioning to shut off the outflow pipe when the water pressure in the upper end of the divided space in the hollow member is lower than that in the lower end of such divided space, and to open the outflow pipe when the pressure in the upper end of the divided space exceeds the pressure in the lower end of the divided space.

Abstract: A square root signal extractor generates an output signal which is a square root function of an input signal. First and second diaphragm amplifiers have cascaded output chambers connected to a high gain output amplifier. The first and second amplifiers are connected as the non-inverting input and the inverting input respectively of the operational amplifier. A high gain output diaphragm amplifier is connected to the inverting amplifier output. The output diaphragm amplifier is constructed such that only a low level input pressure change is required to create a full swing of the output pressure. A non-linear input restrictor and a linear feedback resistor are connected to the input chamber of the inverting amplifiers. The feedback resistor has a significantly greater resistance than the input resistor. The non-inverting diaphragm amplifier is connected to the transmitter by a fluid repeater. A reference signal source is connected to the input restrictor and thus to the inverting input.

Abstract: A fuel injection apparatus is proposed for internal combustion engines with distributor and apportionment valves, which serves to apportion a quantity of fuel proportional to the induced air quantity. The distributor and apportionment valves of the fuel injection apparatus comprise a slide valve which is displaceable opposite a slotted bushing fixed in the valve housing and equipped with slots, in order to effect the variation of the current flow area of the apportionment valves. A control sleeve is interposed between the slotted bushing and the control slide and includes a portion which partially covers the control slots in the bushing to provide for fine control of the control slots in the bushing.

Abstract: A delay valve has a body defining an enclosure, with a separating plate and diaphragm operator therein to define an input, output and third chamber. The input and output chambers are adjacent, and separated by the separating plate. This plate defines an aperture, an umbrella valve opening and a port, all of which communicate between the input and output chambers. A stem and seal arrangement is affixed to and operable by the diaphragm operator against the bias force of a spring, to seal communication through the port at and above a pressure differential between the output and third chambers. As the input chamber vacuum decreases, the output chamber vacuum level likewise decays through the aperture at a relatively slow rate. When the pressure differential between the output and third chambers is inadequate to overcome the bias force of the spring, the port opens and thus produces equilibrium between the input and output chambers.

Abstract: A device for pumping fluid includes a main pump device and an auxiliary device integrally fixed thereto. The auxiliary device can function as a damper, cut-off valve, check valve and relief valve. The auxiliary device includes a first and second room separated by a diaphragm. The first room is connected to the fuel supply passage of the main pump device. One end of the outlet passage of the auxiliary device is connected to the first room by way of a valve mechanism consisting of a valve body and valve seat. The valve body is actuated by deforming of the diaphragm in response to the change of the fluid pressure within the first room. A relief passage is formed in the valve body to connect the first room with the second room. A relief valve such as a ball valve is placed in cooperation with the relief passage.

Abstract: A shunt system for implantation in the body which can be used for transferring cerebrospinal fluid is disclosed. The shunt system comprises a body having an upper and lower surface and a distal and proximal end. The body includes a central cavity opening through the upper surface at a first and second port. A proximal fluid flow channel extends through the proximal end of the body and opens at a third port on the upper surface. A distal fluid flow channel extends through the distal end of the body and opens at a fourth port on the upper surface. A resilient dome comprised of a self-sealing material is attached to and extends over the upper surface of the body. A first portion of the resilient dome extends over the first and third ports on the upper surface defining a first chamber. The first portion of the resilient dome cooperates upon flexing with the third port to occlude the third port.

Abstract: A pressure regulator is provided for the fuel injection system of a spark ignition internal combustion engine. The regulator is designed to regulate the pressure at which fuel is delivered to the fuel injectors, this pressure being constantly referenced to a predetermined value for the purpose of maintaining the correct air/fuel mixture ratio for all conditions of use of the engine. In general terms, the regulator comprises an arrangement of various mechanical components which act to divide the flow of fuel delivered by a supply pump into two parts; one part of this flow is supplied to the injectors which take up the quantity required by the operating conditions of the engine, the remaining part being returned to the motor vehicle tank. To facilitate manufacture and assembly of the regulator, a particular form is given to the regulator valve element used to effect division of the fuel flow.

Abstract: To provide for constant and easily adjusted flow rate of liquids from a container (5), which may be a flexible bag, an indexed feeding chamber (1) is directly connected by gravity with the liquid container (5) and provided with a tubular passage (12) therethrough communicating with the outside, preferably through a filter at an end and with the chamber bottom at the other end. The bottom of the feeding chamber (1) is connected to a dripping tube (1A) positioned below, which in turn communicates with the inlet (21) of a device (2) for the microregulation and stabilization of the liquid flow rate. This device, essentially consists of a holder (44) with a cavity (51) therein and two tubular inlet (41) and outlet (47) passages connecting said cavity with the outside, and having a flexible membrane (43) removably covering the opening of the outlet passage within the cavity. Device (2) is height adjustably supported by a slider (31) on a scale (3) fixed to the stand (4 ) which supports the liquid container (5).

Abstract: A diaphragm pressure regulator is proposed which serves to regulate a fluid pressure in a system having fluid flowing through it, and in particular to relate the fuel pressure in a fuel injection system. The diaphragm pressure regulator includes a valve diaphragm, which cooperates with a valve seat. The valve diaphragm separates a spring chamber having a system pressure spring from a system pressure chamber, into which the valve seat, which is axially displaceable and is supported in an axial bearing point, protrudes and which communicates with the fluid to be regulated. The end of the valve seat remote from the valve diaphragm is embodied as a valve plate and protrudes into a collection chamber, in which it opens a sealing seat toward a return flow line to a greater or lesser extent. A closing pressure spring engages the valve plate and urges the valve seat in the direction of the valve diaphragm.

Abstract: A pressure control valve to control the pressure of a fluid in a fluid system so that it remains constant. This type of valve can be utilized as element of a fuel injection system for internal combustion engines, and has storage means which are independent of the valve member, and actuatable by the pressure of the fluid. The pressure control valve comprises a housing and a support assembly urged toward a valve seat by a control spring. Additionally, a storage spring in the support assembly urges a closing member toward the valve seat. The closing member is slidably received in a bore in the support assembly. The support assembly is connected to a membrane which is tensioned between the housing members. Other variations of this device are also revealed herein.

Abstract: A differential-pressure valve is described including a valve passageway formed through a fixed wall and closable by a valve member displaceable by a differential-pressure sensor biassed to close the valve passageway and subjected to the differential pressure such that the higher pressure tends to open the valve passageway and the lower pressure tends to close the valve passageway.

Abstract: A differential pressure valve is proposed for a fuel injection system of an internal combustion engine. The differential pressure valve includes a diaphragm embodied as the movable valve element, which separates two chambers from one another. A fuel supply line discharges into one chamber and a valve seat carrier provided with a valve opening protrudes into this chamber. This chamber also houses a filter element and a valve spring is disposed coaxially with the valve seat carrier between upper and lower spring plates. The filter element is disposed such that a subsequent change in the tension of the valve spring is also possible. To this end, the filter element can engage the upper spring plate on one side in a sealing manner and on the other side can be supported in a sealing manner in a groove of the wall of the chamber (FIG. 1). In order to assure the free mobility of the filter element, it is provided with an elastically deformable area. As shown in FIG.

Abstract: A differential pressure delay valve for vacuum controlled devices is disclosed. The valve has input, output and third chambers with a controlled flow orifice in a separating plate between the input and third chambers; a diaphragm operator with a controlled flow orifice between the input and third chambers; a stem with a seal on one end attached to and operated by the diaphragm to open or close a port in the separating plate; and, a bias spring of any predetermined level to maintain the port in a closed position is located in either the input or third chambers. The diaphragm operator opens the port to balance the pressures in the input and output chambers when the change in input pressure or vacuum both is greater than the bias force of the spring and too sudden for rapid dissipation through the fixed orifices. At pressure changes less than the bias force of the spring the valve operates as a standard delay valve.